Question: The skerry with highest focal height is?
Paraphrase: What skerry has the highest focal height?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q216851 . ?ent wdt:P2923 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Skrapan lighthouse, Brödstycket, Luovukkaluoto lighthouse, Farfarsgrund, Svingrundet